9/22/10
If you're not in a rush to get somewhere, consider going 55 mph instead of revving up to 65 mph. Just reducing your speed a tiny bit can improve your car's fuel efficiency by as much as 10 percent. If you drive at 75 mph, not only may you risk a speeding ticket, but your fuel economy drops by a whopping 25 percent, too. That's a sure way to use up a lot of gas fast.